????:1????????????:????????

2?????

3???50?????

4?????

5?????????

?????????6??????????5???? ?????????????????5?????????,??“????”???????,?????

???(NASA)????,“?????????????”????????????????5???10?52??????“??????5”???????,????????????????????15??,??????????

“??”?25????,6????????????12???????????15?????,?“???”?????

5????6?????,“?”????????????“?????????????????????5”??????????????,??6?????????????1????????,“?????????”??3???50?????????????,???????

?????????????2011????,???(SpaceX)2014???????????NASA?,?“????????”???????????“?”???,NASA???

????,??????2017????????,??????????????????????????,“?”?;?“?”?????????????????????,???????10?????????(?) ?????:??